Abstract
Immediately when the communication already became the people in the network high speed development to carry on one of today exchange fundamental modes through the network, compared with Email, it had bidirectional interactive and instantaneity。Now already had many kinds of quite popular immediate communication software, such as QQ, MSN and so on, but all was based on C/The S pattern, needs to download the client side to carry on the installment, the user name, the password, chats the record and so on also is deposits on the local machine, all has in the security and the conveniences is short of。B/S is along with Internet technology starting, to C/S structure one kind of improvement.
The main introduction of the original JAVA、AJAX、JSP、java script、XML technique the person who is mutually related rudimentary knowledge , by means of the analysis to scripting language , integral target , JSP together with the data bank joint of JSP of JSP and so on technique , probing into to establish to Immediately chat design idea , means and design process , the meritorious service detailed to analyze every module be able to reach the realization means The problem such as utilizing AJAX technological development to chat in the room , and resolving refurbishing and frame web page together with The problem such as utilizing AJAX technological development to chat in the room , and resolving refurbishing and frame web page together with variable transmission and chatting interface and shielding and so on as chatting , and uniting the source program to expound , the chatting room that the original was achieved has the well user interaction interface , and to improve user’s impression , file transmission.
Key words：Immediately Chat；Web；Ajax ；Java；java script；Xml；
